Plow.



N. L MILLIKEN.

PLOW. APPLIUATION FILED APR.15, l911.

Patentd Feb. 20, 1912.

2 SHEETS-SKEET 1.

WITN SEES INVENTOR NORRIS PETERS. lNC.. LlTHc, WASHINGTON D C.

To all when it may concern:

UNITED STATES PA'rE T OFFICE;

NORMAN I. mrtmxsnor JANESVILLE, WISCONSIN, assronon r0 THE JANESVIILLEY MACHINE 00., or JANESVILLE, WISCONSIN, A CORPORATION or WISCONSIN.

Specification of Letters Patent.

Application filed April 15, 1911 Serial No. 621,200.

Be it'knownthat I, NQR1\IAN I. MIL I- KEN a citizen of the UnitedStates, residing at anesville, in thecounty of Rock, State of \Visconsin, have invented certain new and useful Improvements in Flows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others'skilled in the art to which it nppertainsrto make and use the same.

This invention relates to certain improvements in plows of the ni'oldboartl type and has for its object to proyide a-siniple and efli-v cient structural formation and combination of parts whereby a very effective and.eco-- noniical turning of the soil is attained.

It has further for its object a"st-ructural formation and combination of parts whereby its operation is eflicient in' a great variety of soils.

A further object is to provide a formation of working surfaces and parts, whereby, the raising up and turning of the soil is distributed evenly over the entire length of contact, and a smooth and complete furrow is obtained under any speed of travel;

This combination and formation of parts .has a further object, to raise up and turn the soil without lifting the inner side or wall and without tearing the soil andby'a purely rolling movement, by bending, so that the I furrow is folded into a sector .as it is rolled.

A further object is to throw considerable of the "weight of the furrow on its inner and bottom side, by folding the outer side of the furrow before or by the time the wing of the share has cut the inner edge loose and to continue the turning operation of the furrow without lifting this. inner edge, so as to prevent the furrow from sliding awayfrom the mold-board during completion of the operation.

I The result of this combination is a consid erable. saving of draft or power and an evenly distributed wear or work over the contact surface, a smooth, steady operating plow, a perfectly turned and loosened soil under any practical conditions of speed'and soil.- All as will hereinafter more fully appear.

In the accompanying. drawings Figure 1 is a top view, Fig. 2 is a side elevation, Figs. 3 and 4 are perspective views, Fig. 5 is a front elevation and Fig. 6 front vertical secsucc'essively beginning atl'and endingrat' sive.--' -v In the figures,- A is the share, B the mold-- Patented Feb; 20,191 I.

board, (I the landside and a the wing or point of the share, D represents -approiti-yinately the inside wall of the furro'wor the width of furrow the plowshould cut."

Referring to Fig. 6 and the sefctioi'ialviewsthereof, the curves radiatesubstantially.

from the share wing a or more strictly speaking from the inner bottom c'orn'erof the furrow asindicated by dottedcurved lines. Now while these curves are not-per}? fect ones, they are single and gradual ,and=

none of them reverse and all do radiate-from within the furrow bottom, or cross the fur.-

row bottom between the landside G-and the r; I

share point a. The furrow will assumethe shapeindicated by these sectionso -curres-I.

Vhen the furrow slice is at the point- 4, 1, its bottom surfaceassumes the'shape: of the section 4 of Fig. 6.; Considerable of'the'" weight of the furrow would after it passes the point indicated by 4,- Fig. 1, beonthe. inner lower corner and as the inner edge has" not been lifted the operation of folding and turning continuesuntil completed, with a purely rolling and folding morementr The added weight on the insidelowereoruer prevents the furrow fi'om sliding away from the moldboard, t f

To more fully describe my invention', the line D, Fig. 2 is divided into substantially equalspace'sg, 72,2 j,- k, Z, m, a, 0,7). Rad atin'g 'from'each of these pointsa straight line would intersect the outer and. inner edges of the working surface of the. moldboard and share; Bet-ween each of these interseoting points the moldboard B and share A would be substantiallystraight and lie parallel to the said lines. In otherwords, there are straight surfaces at every point on the turning or working surface'of the mold-' board andshare. A'[ straight line lying across the straight surface would, if extends ed, touch the bott'o inner corner 'of the furrow to be turne which furrow corner. is represented approximately byiD of'Fi 2 and 6. These lines-which intersect ont e outer edge of A and B beginning at'A, pref e'rably gradually decrease'in distanbi-t ward the rear of moldboard' substantially as indicated. y

Referring again-to Fig. 6 lind'ttie straight dotted lines it will be noted that each section forms an arc whose chord intersects -below and inside the line D or pro erly speaking the inside lower corner the furrow. Now if any one of these arcs should intersect above and outside of the share wing a then the furrow could not ;turn by a perfect rolling motion and the lower surface of the furrow would assume the shape of a reverse curve and the' soil would be lifted or the weight on the furrow .atD reduced. There would also be excessive wear at this point at thebottom surface of moldboard B and a tendency to throw the soil away from the upper and outer edge of the moldboard. With this [invention the ,furrow' is rolled upon itself and over, without lifting or tearing. Loosening of the soil is caused-by bending and not by tearing or shearing as in other plows.

' I do not wlsh to be understood as confining myself to mathematical exactness, when re ,e

rrin to a oint line curve etc. I

-meanwithin a reasonable or practical degree or within what is, in the art of plow makin considered a reasonable or safe de- Letters Patent on is- .gree 0 accuracy.

Having "thus described my invention, what I clalm as new and desireto secure 1. In aplowthe combination of a moldboard, a) share, said moldboard having for its entire length edges and curves in a transverse vertical plane describing an arc whose chord crosses the bottom line of said plow within said share as and for the purpose specified. 2. In a plow the combination of a moldboard, a share, a share point'and a landside, the shape of said moldboard in a transverse vertical plane describing an arc whose plane describes single curves whose lines, if

extended without reversing, would inter; sect the lower inner corner of the furrow to be turned, as and for the purpose specified.

5. In a plow the combination of a share,

.a moldboard, said share and moldboard having substantially straight lines on their entire working or turningsurfaces which do .not intersect each other but radiate from the inner bottom corner of the furrow to be turned, and at substantially even intervals, said lines touching the landside edge of said share and moldboard at points whose distance from one another gradually decreases, beginning at said share, as and for the purpose specified.

6. In a plow, the combination of a moldboard, a share, said moldboard and share having straight lines or surfaces on their entire turning surface which do not intersect each other but do radiate from the bottom inner corner of the furrow to be turned, as and for the purpose specified.

NORMAN I. MILLIKEN.

W'itnesses:

LOUISE A. MANN, GEO. H. DRUMMOND. 

